"Ms. Fisher suffered what appeared to be a cardiac arrest on the airplane accompanied by vomiting and with a history of sleep apnea", the report said.

"Based on the available toxicological information, we cannot establish the significance of the multiple substances that were detected in Ms. Fisher's blood and tissue, with regard to the cause of death".

Blocked arteries were another factor that contributed to the star's death.

Carrie finished shooting the latest Star Wars movie prior to her death

The release of full toxicology reports yesterday came as pals said Carrie, who battled drug addiction during her career, had a relapse a month before she died.

She also tweeted a snap with her French bulldog Gary during Thanksgiving in November that showed beer bottles by her bed.

A friend said it was part of a full-blown fall from the wagon for the star.

They added: “Carrie had relapsed around Thanksgiving. I saw her myself high as a kite once, not long ago.

“Some of her friends doubted she was ever totally clean and sober because she got doctor’s ­prescriptions to treat her bipolar disorder, depression and anxiety.

“Ironically, she said to me, ‘You’re too old to get high any more, dear’. I replied, ‘You too, dear’.”
Carrie had spoken openly about her struggles with drink and drugs, and admitted using cocaine on the set of The Empire Strikes Back

Her brother Todd said on Friday said he was not surprised that drugs may have impacted her health.

"I would tell you, from my perspective that there's certainly no news that Carrie did drugs," he said.